columns_info.h File Reference

#include "kernel/symbol.h"
#include "kernel/value.h"
#include "utility/misc.h"
#include <algorithm>
#include <functional>
#include <iostream>
#include <optional>
#include <random>
#include <set>
#include <string>
#include <vector>
#include "columns_info.tcc"

Go to the source code of this file.

Classes
class	ultra::src::columns_info
class	ultra::src::columns_info::column_info
	Information about a single column of the dataset. More...

Namespaces
namespace	ultra

Concepts
concept	ultra::src::DataframeRow
concept	ultra::src::DataframeMatrix

Enumerations
enum class	ultra::src::typing { weak , strong }
enum class	ultra::src::task_t { classification , regression , unsupervised }

Functions
constexpr std::size_t	ultra::src::internal::normalised_column_count (std::size_t raw_count, std::optional< std::size_t > output_index) noexcept
constexpr std::optional< std::size_t >	ultra::src::internal::raw_column_index (std::size_t idx, std::optional< std::size_t > output_index) noexcept

Detailed Description

Remarks

This file is part of ULTRA.

Copyright

Copyright (C) 2024 EOS di Manlio Morini.

License

This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/

Enumeration Type Documentation

task_t

enum class ultra::src::task_t

strong

Type of learning task associated with the dataframe.

• classification: discrete output variable;
• regression: continuous output variable;
• unsupervised: no designated output variable.

typing

enum class ultra::src::typing

strong

Strategy used for data typing.

• weak. Types are inferred permissively: columns that share the same domain (e.g. double with double, string with string...) can be freely mixed by the engine;
• strong. Types are inferred strictly: every column has its own type/category (Strongly Typed Genetic Programming).

Even when specifying typing::weak the engine won't mix all the columns. In particular, a unique category will be assigned to:

• columns associated with distinct domains;
• columns with d_string domain.

See also

https://github.com/morinim/ultra/wiki/bibliography#10